#pragma once

#include<iostream>
#include<stdarg.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>



#define SIZE 1024

#define Info 0
#define Debug 1
#define Warning 2
#define Error 3
#define Fatal 4

#define Screen 1
#define Onefile 2
#define Classfile 3
#define LogFile "log.txt"


class Log
{
public:
    Log()
    {
        printMethod = Screen;
        path = "./log/";
    }

    void Enable(int method)
    {
        printMethod = method;
    }
    std::string levelToString(int level)
    {
        switch(level)
        {
            case Info:return "Info";
            case Debug:return "Debug";
            case Warning:return "Warning";
            case Error:return "Error";
            case Fatal:return "Fatal";
            default: return "None";
        }
    }

    // void logmessage(int level,const char* format,...)
    // {
    //     char leftbuffer[SIZE];
    //     time_t t = time(nullptr);
    //     struct tm* ctime = localtime(&t);

    //     snprintf(leftbuffer,sizeof(leftbuffer),"[%s][%d-%d-%d %d:%d:%d]",levelToString(level).c_str(),\
    //     ctime->tm_year + 1900,ctime->tm_mon,ctime->tm_yday,ctime->tm_hour,ctime->tm_min,ctime->tm_sec);

    //     char rightbuffer[SIZE];
    //     va_list s;
    //     va_start(s,format);
    //     vsnprintf(rightbuffer,sizeof(rightbuffer),format,s);
    //     va_end(s);

    //     char logtxt[SIZE*2];
    //     snprintf(logtxt,sizeof(logtxt),"%s %s\n",leftbuffer,rightbuffer);

    //     //printf("%s",logtxt);
    //     //格式:默认部分+自定义部分(可变参数)

    //     printLog(level,logtxt);
    // }

    void printLog(int level,const std::string& logtxt)
    {
        switch(printMethod)
        {
            case Screen:
                std::cout<<logtxt<<std::endl;
                break;
            case Onefile:
                printOneFile(LogFile,logtxt);
                break;
            case Classfile:
                printClassFile(level,logtxt);
                break;
            default:
                break;
        }
    }

    void printOneFile(const std::string& logname,const std::string& logtxt)
    {
        std::string logname_ = path + LogFile;
        int fd = open(logname_.c_str(),O_WRONLY|O_CREAT|O_APPEND,0666);
        if(fd < 0)
        {
            return;
        }
        write(fd,logtxt.c_str(),logtxt.size());
        close(fd);
    }
    void printClassFile(int level,const std::string& logtxt)
    {
        std::string filename = LogFile;        //"logtxt.INFO"
        filename += '.';
        filename += "levelToString(level)";
        printOneFile(filename,logtxt);
    }
    void operator()(int level,const char* format,...)
    {
        char leftbuffer[SIZE];
        time_t t = time(nullptr);
        struct tm* ctime = localtime(&t);

        snprintf(leftbuffer,sizeof(leftbuffer),"[%s][%d-%d-%d %d:%d:%d]",levelToString(level).c_str(),\
        ctime->tm_year + 1900,ctime->tm_mon,ctime->tm_yday,ctime->tm_hour,ctime->tm_min,ctime->tm_sec);

        char rightbuffer[SIZE];
        va_list s;
        va_start(s,format);
        vsnprintf(rightbuffer,sizeof(rightbuffer),format,s);
        va_end(s);

        char logtxt[SIZE*2];
        snprintf(logtxt,sizeof(logtxt),"%s %s\n",leftbuffer,rightbuffer);

        //printf("%s",logtxt);
        //格式:默认部分+自定义部分(可变参数)

        printLog(level,logtxt);
    }
    ~Log()
    {}

private:
    int printMethod;      //打印方式
    std::string path;
};

Log lg;

